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Re: 20 joules at 100 bps vs 4 joules at 500 bps

Original poster: Terry Fritz <vardin@xxxxxxxxxxxxxxxxxxxxxxx>

Hi,

The Freau formula's "1.7" factor is for NSTs. NSTs are very power limited and predictable so the formula works over a wide variety of systems.

In the case of pole pigs, we can draw vastly more power that they are "rated" for.... We would need to know the "true" voltage, current, and power factor. Often the voltage and an "averaged" current is metered, but to truly know the input power takes more metering equipment than most folks have at the time.

"Bill Wysock" is capable of running a pig to super powers "more" than anyone else!! I bet he know exactly how to tickle every last bit of power out of them ;-))) If he is paying attention to this thread, maybe he could comment on how much power the Model 9 "really" uses to get 17 foot arcs.

The "metering" problem is a big one!! Big pole systems are hard to accurately measure true power without some pretty nice equipment. At the low end, the fabulous $30 "will-a-watt" meter solved the problem below 1.8kW. Above that, a wide band CT and one of those power "black boxes" is not cheap. Traditionally, they used the pole transformer's rating as a standard. How for you could push it was a matter of "skill".

Today, we are trying to "normalize" the Freau equation to cover a larger variety of coils and make meaningful and true comparisons. That work continues, but is far far from perfected...

Bart has wonderful data here!! :

http://www.classictesla.com/download/tc99.pdf

Cheers,

        Terry


At 05:02 PM 8/8/2005, you wrote: 
Adam, all,

Well, I certainly can't make any such claim with any of my coils
but I do recall firing my previous big coil (Medusa) with (2) se-
riesed 1.5 kVA 7200 volt PTs and getting 9 to 10 foot power arcs. However, like several others have noted, I was certainly consuming more than the 3 kVA total nameplate rating of the 2 PTs. Panel
meters were indicating over 8 kVA! So nothing special going on here
and I suspect the same could apply to some of these other remarka-
ble power vs spark length claims.

David Rieben
..................

> p.s.
> ever and forever, absolutely best performer, supa
> dupa mega giga coil:
> http://www.ttr.com/model9_page2.htm
> "Longest arc length is 17 feet with 5 Kva A.C.
> input."
> Freau number is 2.885!!!
> 1981 - whoa! so you`re all here nothing more than
> just a losers!
> LOL :-)))
>